datesBetween.twig

{% macro datesBetween(startDate, endDate, currentDate = null) %}
    {% import _self as self %}

    {# initialize the currentDate from the startDate #}
    {% if currentDate is null %}
        {% set currentDate = startDate %}
    {% endif %}

    {# echo the current date, or the startDate if it's the first run #}
    <li>{{ currentDate }}</li>

    {# add a day #}
    {% set currentDate = currentDate|date_modify('+1 day') %}

    {# if we're not at the endDate yet, call ourself and carry on #}
    {% if currentDate <= endDate  %}
        {{ self.datesBetween(startDate, endDate, currentDate) }}
    {% endif %}
{% endmacro %}

{% import _self as self %}

{% set startDate = now %}
{% set endDate = now|date_modify('+1 week') %}

<ul>
    {{ self.datesBetween(startDate, endDate) }}
</ul>